Journal
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS
Volume 8, Issue -, Pages 1238-1241Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LAWP.2009.2036133
Keywords
Addition theorem; coupled mode theory (CMT); electrically small antenna (ESA); near-field coupling; wireless power transfer
Funding
- Ministry of Science and Technology [ROA-2007-000-20118-0(2007)]
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This letter proposes a new approach for estimating resonant characteristics of near-field coupled small antennas. It is based on the equivalent circuit representation of the interaction of two antennas using the addition theorem of spherical modes. Using the proposed method, the splitting of the resonant frequency and the resonant impedance of the near-field coupled small antennas can be obtained by the impedance characteristics of the isolated antenna. The results are shown to be in good agreement with the full electromagnetic (EM) simulation.
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